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Harnessing Magnetic Properties for Precision Thermal Control of Vortex Domain Walls in Constricted Nanowires.
Nanomaterials (Basel)
February 2025
Department of Basic and Applied Sciences, A'Sharqiyah University, P.O. Box 42, Ibra 400, Oman.
This study investigates the thermal pinning and depinning behaviors of vortex domain walls (VWs) in constricted magnetic nanowires, focusing on the influence of intrinsic magnetic properties on VW stability under thermal stress. Using micromagnetic simulations, we analyze the roles of saturation magnetization (Ms), uniaxial magnetic anisotropy (Ku), and nanowire geometry in determining VW thermal stability. The modeled nanowire has dimensions of 200 nm (width), 30 nm (thickness), and a 50 nm constriction length, chosen based on the dependence of VW formation on nanowire geometry.
View Article and Find Full Text PDFTailoring Electronic and Magnetic Properties of YcoO via Anharmonic Phononic Coupling and Vector Vortex Beam Interaction.
J Phys Chem Lett
March 2025
International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.
The ability to dynamically manipulate the optoelectronic and magnetic properties in functional materials under nonequilibrium conditions is essential for the advancement of quantum technologies and energy-related applications. Here, we demonstrate a novel method to regulate the optoelectronic and magnetic properties of YCoO, a representative perovskite oxide, using ultrafast vortex laser pulses coupled with nonlinear phonon interactions. Vortex light, characterized by its helical phase front and topological charge, allows selective excitation of infrared phonon modes, enabling anisotropic lattice distortions and precise modulation of material properties.
View Article and Find Full Text PDFUnderstanding Right Heart Flow: Implications for Interatrial Shunt Device Therapy in Heart Failure.
J Soc Cardiovasc Angiogr Interv
January 2025
The Carl and Edyth Lindner Center for Research and Education at The Christ Hospital Network, Cincinnati, Ohio.
Elevation in left atrial pressure with subsequent pulmonary congestion is central to the pathology of heart failure. Interatrial shunts have emerged as a potential therapeutic strategy in patients with heart failure, especially those with diastolic dysfunction. These devices decrease left atrial pressure by shunting blood into the right atrium.
View Article and Find Full Text PDFDiverse dynamics in interacting vortices systems through tunable conservative and non-conservative coupling strengths.
Commun Phys
March 2025
Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, 67663 Kaiserslautern, Germany.
Magnetic vortices are highly tunable, nonlinear systems with ideal properties for being applied in spin wave emission, data storage, and neuromorphic computing. However, their technological application is impaired by a limited understanding of non-conservative forces, that results in the open challenge of attaining precise control over vortex dynamics in coupled vortex systems. Here, we present an analytical model for the gyrotropic dynamics of coupled magnetic vortices within nano-pillar structures, revealing how conservative and non-conservative forces dictate their complex behavior.
View Article and Find Full Text PDFInverse melting and re-entrant transformations of the vortex lattice in amorphous ReZr thin film.
Nat Commun
March 2025
Tata Institute of Fundamental Research, Homi Bhabha Rd, Mumbai, 400005, India.
"Inverse melting" refers to a rare phenomenon where an increase in temperature can induce a transition from a liquid to a solid. The vortex lattice in Type II superconductors is one system where inverse melting has been theoretically predicted. Here, we report the inverse melting of vortices in an amorphous ReZr thin film with moderate vortex pinning under the application of a magnetic field.
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